From their Facebook page:
Step 1: Go to Outback today.
Step 2: Say "Bloomin' Monday" to your server.
Step 3: Enjoy a FREE Bloomin' Onion with any purchase.
Step 4: Say thanks to Ryan Newman for his 1st place finish!
No coupon is necessary.
Valid at participating locations.
Offer is for TODAY only (Monday, April 2nd)